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Questions tagged [usb-hub]

An USB hub is a device that expands a single USB port into multiple ports, thus allowing to connect more devices to a host system. The USB&LAN controller (LAN9512) acts as on on-board USB hub on the Raspberry Pi (except Pi Zero).

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Read/Write LAN9512 EEPROM

We are building a device around the Compute Module 3 and since it needs internet access we decided to go with the LAN9512 that was also used in the Raspberry Pi earlier. The LAN9512 requires an ...
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External HDD stopped mounting automatically in Raspbian

In Raspbian I used to be able to just plug in my external HDDs and they would be detected I could then find them in /media/ using WinSCP and transfer files to them. I haven't used Raspbian in a ...
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Best way to power multiple Raspberry Pi 4s?

I ordered a few Raspberry Pi 4s, still under way, each with their own power supply, and I plan to get more, but when I have been previously able to power RPis with USB-hub, there's apparently no USB-C-...
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Pi not recognising 2.5" HDD over powered USB Hub

So after finally setting up OpenElec I decided to also get a powered USB hub. Got this one for cheap from work. The power supply for the HUB outputs read: +5V ⎓1A I connected a 2.5" HDD in a USB 2.0 ...
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59 views

Sound system with PiZeroW

wondering if someone could give me a few pointers on a project I'm working out. I haven't yet bought any of the equipment, just trying the ideas first to see if it will work. I'm planning on ...
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282 views

How to give PS3 controllers charging handshake on connected powered hub?

I have a Raspberry Pi 3 with a powered USB Hub ( 7 port Anker ) running retro game OS Lakka. The PS3 controllers work great with the system, but I want to be able to charge them as well. Currently ...
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518 views

Raspberry Pi B+ power-supply and USB problems

I have two Raspberry Pi B+. One of the two is rather unstable (details below) and I would like to understand if it is just a defect or if I might have broken it so that I can avoid making the same ...
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RPi 3B power supply and external USB Hub issue

I am building a project with a custom USB hub attached to one of the RPi USB ports. On the custom hub I attach 7 USB devices powered by their own batteries. The custom USB Hub is equipped with an ...
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FTDI USB Serial Device converter now disconnected from ttyUSB2

---Setup--- 1) We are evaluating using Raspberry Pi Compute Module CM3. 2) USB-HUB and USB-UART are boarded on the IO board. 3) USB-HUB is working in Self-power mode. 4) VBUS-detect of USB-HUB uses ...
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21 views

Can I issue a command when a specific message issued in the syslog

I am having power problems with my USB devices which is proving difficult to resolve. However I can see on the syslog that there is a specific error message which shows there is a problem. What I ...
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30 views

USB hub is switched into USB1 mode with USB2 peripherals

I was wondering why my USB sd-cardreader operates that slow, see this benchmark: root@DietPi:~# hdparm -tT /dev/sda1 /dev/sda1: Timing cached reads: 4 MB in 2.00 seconds = 2.00 MB/sec ...
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Is it possible to have both hidraw0 and hidg0?

I would like to know if we can have both hidraw0 and hidg0 at the same time? Detailed description :- I have a barcode scanner, raspberry pi zero W, zero4u hub. Barcode scanner is connected to ...
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2answers
56 views

Attaching second raspberry pi to a USB hub already connected to a Pi

What would happen if I attach a raspberry pi (A) to a USB hub for power which is already connected to a second raspberry pi (B) powered by an adapter (but connects to devices such as HDD, keyboard etc ...
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1answer
2k views

What is the alternative IC to LAN9512 or LAN9514? this chip too HOT

I am building a companion board with the Compute Module, USB & ethernet capability and running it 24/7 is part of the requirement. The standard practice would follow and use the same USB to ...
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406 views

Why did my wireless USB adapter suddenly stop working on a powered USB hub after it worked for weeks?

I set up two Raspberry Pis to power a 50" television each about a month ago. On each I have Raspbian running, with slight modifications so that it boots into a Midori browser kiosk that, by default, ...
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1answer
107 views

Input on raspberry pi 0 on stretch

I recently switched to stretch, the latest version of raspbian os on my raspberry pi 0 (not the w model) I cannot get any peripherals to work; mouse, keyboard, or wireless adapter. I tried my pihat ...
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Power rpi with 2 ports from usb hub

Ok so I have not been able to find this specific question on the interwebs. I am looking for a USB hub that will power the pi and a few other things. I'm not concerned about the over all power rating ...